Logic voltage first, then pins, then the wireless it really has · review
The original Arduino Uno: an ATmega328P at 16 MHz with 32 KB of flash, 14 digital and 6 analog pins, and full IDE support.
Every Arduino tutorial starts here.
A clone works, but this funds the project.
For wireless, see the R4 WiFi.
| MCU | ATmega328P, 16 MHz |
|---|---|
| Memory | 32 KB flash, 2 KB SRAM, 1 KB EEPROM |
| I/O | 14 digital (6 PWM), 6 analog |
| Logic level | 5 V |
| USB | Built in |
| Amazon ASIN | B008GRTSV6 |
5 V.
No.
8.7/ 10
Still the board to learn on.
workshop machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | MCU |
|---|---|---|
| Arduino Uno REV3 | $28 | ATmega328P, 16 MHz |
| Arduino UNO R4 WiFi | $28 | Renesas RA4M1 + ESP32-S3 |
| Arduino Nano A000005 | $26 | ATmega328P |
| ELEGOO ESP-32 3-Pack | $20 | ESP32, dual core, 240 MHz |
A beginner learning electronics.
Specifications: the manufacturer sheet for maker machines and tools and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Small board · ESP32-S3, 240 MHz · Wi-Fi, Bluetooth 5.0 · USB-C · HID · MicroPython · headers
A Nano-sized board with an ESP32-S3 at 240 MHz, Wi-Fi and Bluetooth 5.0, USB-C and MicroPython support, with headers fitted.
Best for: A builder fitting wireless into small projects.
≈ $19
Small board · ATmega328P · 14 digital, 8 analog · mini-USB
The classic Arduino Nano in a compact shape, with an ATmega328P, 14 digital and 8 analog pins and a mini-USB port.
Best for: A builder placing an Uno-class chip in a small project.
≈ $26
Board · Renesas RA4M1 + ESP32-S3 · Wi-Fi, Bluetooth 5.0 · USB-C · CAN · 12-bit DAC · Qwiic · 12 × 8 LED matrix
A modern Uno pairing a Renesas RA4M1 with an ESP32-S3 for Wi-Fi and Bluetooth, plus USB-C, CAN, a 12-bit DAC and an LED matrix.
Best for: A learner who wants wireless with Arduino support.
≈ $28
A price quoted in the text of a MakerVerdict page dates from the day that page was written; the live figure beside each product is fetched while you read and replaces it.
